diff --git a/package.json b/package.json
index 915df299..a78be093 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
   "devDependencies": {
     "chai": "4.1.2",
     "chai-as-promised": "7.1.1",
-    "chai-immutable": "1.6.0",
+    "chai-immutable": "2.0.0-rc.2",
     "coveralls": "3.0.1",
     "istanbul": "0.4.5",
     "jscs": "3.0.7",